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Fiat 500 Replacement Key Fob If your 500 remote key fob has stopped working, it may be time to replace the battery. If you do replace the battery but it doesn't work the issue is probably elsewhere. At United G28 Car Keys , we specialize in the creation of new keys for old cars. We have the tools and components required for this type of service. Dead Coin Battery A dead battery is the most common reason for your Fiat 500 keyfob not locking or unlocking the doors. The battery of the coin cell inside the key fob can be depleted quickly in the event that you don't use it frequently enough. If your remote started to show signs of weakening such as a loss of range and then completely stopped working it is likely that the battery is dead. Metal clips hold the battery in place in the key fob. If the clips aren't tight, they can cause problems with contact that can prevent the remote from receiving power. Make use of a flathead screwdriver to open the retaining clips and remove the battery. Use a battery that has the same size, voltage and specifications as the original. The key fob may also become corroded or damaged due to exposure to water. Even a quick bath in warm, soapy water could cause damage to the chip. It is best to keep your key fob in a dry environment. Water Damage Water damage may be the reason for your key fob not functioning properly. The rubber seals on key fobs stop them from being damaged by a light drizzle or splash of water. However, it's crucial to keep your keys out of the ocean, washing machine, and even the pool. The key fob comes with an electronic chip that transmits a message to the immobilizer system of your car. The chip allows the 500 to be locked and started. If it gets wet, it will no longer work. If you want to check if your key fob is still working, you can clean the internal electronics using isopropyl or electronic cleaner. However, it's recommended to purchase a replacement from a dealer instead of trying to repair the key fob which has been submerged in salt water. A replacement fob may cost you a few dollars but it's far less expensive than paying to have your Fiat 500 towed to a dealership and fixed there! You can also fix it yourself with just a few steps. Be sure to use the correct type of battery before you attempt to open your key fob. There are step-by-step directions for every car keyfob online. Faulty Chip The chip in the key fob communicates with the vehicle's immobiliser to ensure that the vehicle is able to start when the correct key is inserted. If the chip is damaged or corrupted, your car won't start regardless of what you do. A chip that is damaged can happen due to a variety of reasons, but most commonly due to water damage or a dead battery. Whatever the reason, it is recommended to delegate the work to a locksmith, as they will be able to replace the chip quickly and at a low cost. If your key fob will not work after being exposed to clean water from a tap or rain then remove the battery. Wipe down the electronic component with paper towels. If the key fob doesn't work it's likely to be a fried chip and must be replaced. Many people will seek out their dealer when in need of an entirely new Fiat key fob, however it can be a costly option. If you are looking for a cost-effective way to have your Fiat key fob repaired, look no further than United Locksmith. We have the tools and knowledge required to repair your Fiat fob quickly and professionally. way. Faulty Receiver Module Fiat key fobs send an electronic signal to the vehicle, which will unlock and close doors (and start the car for those with an automatic transmission) up to 50 feet. However there are a few factors that can cause the fob to stop working. This includes a dead battery, water damage, worn out buttons or a receiver issue signal interference, or malfunctioning chips. If the fob was placed in a pocket which has suffered extreme trauma (such as being dropped on a hard floor or being washed in the washer) the fob may not be able to communicate with the Body Control Module (BCM) of the car. The BCM is a security device that will only accept signals from genuine keys. It is necessary to replace the fob if this occurs. A professional locksmith can handle the entire process of replacing your key including programming a new key for your 500. In fact, they can provide you with a duplicate key that functions the same as the original fob (and costs less than the cost).